Browse through our selection of premium flame resistant work shirts, including long sleeve FR shirts. Big R offers a wide selection of heavy-duty, long sleeve FR shirts in varying styles to help keep you safe while you’re on the job. These flame resistant work shirts are available in a variety of colors and styles to match with your existing uniform or work outfit of choice. Each shirt is designed to keep you comfortable and reduce your risk of burns due to open flames or exposure to intense heat. These shirts have convenient features such as moisture-wicking properties and Greater Arm Mobility technology. Additionally, products are either NFPA 70E certified or UP Classified to NFPA 2112.